Which statement best describes the National Cancer Data Base?

The National Cancer Data Base (NCDB) is indeed characterized as a multi-hospital Cancer Care Registry. This means that it collects data from numerous hospitals across various geographic regions, consolidating cancer cases from a wide range of facilities. Such an infrastructure allows the NCDB to compile a vast and comprehensive dataset that reflects the cancer burden within the populations served by these hospitals.

The multi-hospital aspect is significant because it enables the database to draw on a diverse array of data sources, thus enhancing the reliability and accuracy of cancer surveillance and research. This collective data can be used to evaluate cancer care processes, outcomes, and overall trends in cancer incidence and treatment across different healthcare settings.

In contrast, the other options do not encompass the full scope of the NCDB. For instance, the NCDB is not limited to a specific geographic area, does not solely focus on incidence data, and is not strictly a population-based registry in the traditional sense, as it relies on data contributed by participating hospitals rather than comprehensively covering an entire population's cancer cases.